#define _CRT_SECURE_NO_WARNINGS

#include <iostream>

using namespace std;

template<typename T>
void Swap(T& left, T& right)
{
	T tmp = left;
	left = right;
	right = tmp;
}
int mian()
{
	int a, b;
	cin >> a >> b;
	Swap(a, b);
	cout << a << " " << b << endl;
	return 0;
}
